Thermostatic alarm.



F. L. SCUUTTEN.

THEHMSTAH ALARM.

APPLmMlon msn ma. 19. 1915.

Patented Apr. 15, 1919.

UNITED sTATEs PATENT oEEIcE.

FLOYD L. SCOUTTEN, 0F EAST CLEVELAND, OHIO.

THERMOSTATIC ALARM.

Application led March 19, 1915.

To all whom t may concern.'

IBe it known that I, FLoYD L. ScoUTTEN, a citizen of the United States,residing at East Cleveland, in the county of Cuya hoga and State ofOhio, have invented a certain new and useful Improvement in ThermostaticAlarms, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings.

This invention relates genera l to thermostatic alarms, and more particuarly to one adapted for application to the outlet flue of a furnace, forthe purpose of giving an alarm in case this iiue should become overheated. It will be understood however, that the invention is alsocapable of other appli cations and uses.

The object of my invention is to provide a simple and eiiicient alarmdevice which can be readily applied to the exterior of a flue or pipeand which will, in case of excessive heat, close an electric circuit andsound an alarm bell; and another object of the invention is to provide adevice which can be arranged and which will 4be thoroughly operative ineither a horizontal, vertical, or inclined position, thereby providing adevice which can be attached to a flue extending in any direction.

With these various objects in view, my invention consists in the novelfeatures of construction and the manner of arrangin them, all of whichwill be fully described Iiereinafter and pointed out in the claims; andwhile I show and `describe one form of device for carrying out myinventive idea'ilt will be understood that certain variations ormodifications can be made within the scope of the claims.

In the drawings forming a part of this specification Figure 1 is aperspective view showing the practical application of my invention, thecover being broken away, and Fig. 2 is a sectional view through thedevice and its cover taken at the expansion post.

In carrying out my invention I employ a base 1 of suitable material,such as asbestos board, said base being of such size and shape as to carall of the various arts of the alarm. '(Iiion the under side o the base1, near one end thereof, is a plate 2 of heat conducting metal, such ascopper, and connected to this plate and extending through the base isthe post 3, also of heat conducting material, said post being tapered atits end and Specification of Letters Patent. Patented Apr, 15, 1919,

Serial No. 15,424.

providing a rest for the lever 4 which is pivoted to a bracket 5,attached to the base ad.- jacent the post 8, said lever carryin acontact 6 at its free end to which is attaied the usual construction ofbinding ost 6 for the connection 6b leading to an a arm bell (notshown).

Near the opposite end of the base l is another bracket 7, to which isattached an arm 8 carrying a contact 9 in the form of a spring andprovided also with a binding post 9a from which leads the conductor wire9b. lVorliing through the arm 8 and bearing on the contact 9, is anadjustin screw l0 by means of which the position o the contact 9 withreference to the contact 6 can be adjusted.

The alarm device constructed as above described is adapted to bearranged upon the exterior of an outlet pipe o-r flue of a fur nace,said pipe or flue being indicated at 11, and in order to quickly andsecurely fasten the alarm to said Hue or `pipe I employ a pair ofclamping bands 12, which encircles the Hue or pipe and are preferablycarried by the protecting cover 15; but it will be distinctly understoodthat the clamping bands can be arranged in any suitable manner, and,furthermore, that other forms of fastening means may be employed withoutdeparting from the spirit of my invention.

In operation the parts are arranged as shown, vwith the contact 6beneath the contact 9 but spaced therefrom, the distance between thecontacts being determined by the adjusting screw 10, b means of whichthe device can be adjuste to become operative at any desired temperaturewithin certain limits, it being obvious that, as the temperature risesthe post 3 will expand, and, operating upon the lever 4, will cause thecontact 6 to engage the contact 9, close the circuit through 6b and 9band ring the bell; also that, if the contacts are brought into veryclose relation, a'slight increase above the normal tempera-ture of theflue will cause the alarm to sound Whereas, by separating the contactsmore or less a corresponding increase in temperature will be required toclose the circuit and sound the alarm.

In order to adapt my alarm device for use upon vertical, as well ashorizontal, pipes, I attach a weight 13 to the lever 4 by means of a rodor wire 14 which is bent so as to position the Weight adjacent the baseas most clearly shown, the tendency thereof Abeing te maintain the leverin contact with the expansion post 3 whether the device be used in ahorizontal pr vertical position or in any position intermediatetherebetween.

When the alarm device is arranged horizontally or upon an incline, this4Weight may not be necessary, but when the device is arranged verticallyit then .becomes desirable if not neeessa and as this weight is notexcessive I pre er to employ it in connection with the device in allpositions of the device.

In order to protect the operative arts from dust, dirt and the like Irovi e an envelopin cover 15 of any suitab e material (such as ber)connected to the base in any suitable manner, this cover being brokenaway in Fig. 1 to show the parts therel within.

It Will thus be seen that I provide an eX ceedingly simple, inexpensive,and eliicient therinostatic alarm which will accomplish all of theobjects hereinbefore referred to.

Having thus described my invention, what I claim 1s:-

1. An alarm device comprising a substantially non-conducting base, aconducting plate arranged upon the bottom thereof, an expansion memberconnected to the plate and projecting through the base, a lever restingupon said expansion member and carrying a contact near its free end, anadjustable contact arranged adjacent, but spaced from, the contactcarried by the lever, said.. contacts constituting parts of an alarmcircuit and means for connecting the device to a flue or pige. n

2. n alarm device eomprislng a substantially non-conducting base, aconducting `plate arranged beneath the same, an expansion memberconnected to the plate and projecting through the base, a leverpivotally connected with the base, nesting upon the expansion member andcarrying a contact, a second contact spaced from the first contact, saidcontacts constituting parts of an alarm circuit, and means forconnecting the device to a flue or pipe.

3. In an alarm device, the combination of a bracket, an expansion deviceadjacent to said bracket, a lever pivoted to said bracket and adapted tobe engaged and supported by said expansion device at a pointintermediate oi' its ends, said lever having a Contact adjacent to itsfree end, a contact coperating with the first mentioned contact, an armprojecting from said lever, beneath said lever, and a Weight on said armadapted to maintain the latter in engagement with the expansion devicein varying angular positions of said alarm device.

4. In an alarm device, the combination of a base, a bracket projectingupwardly from said base, an expansion post projecting upwardly from saidbase, a lever pivoted to said bracket and extending over said post andhaving a contact adjacent its free end, a Contact cooperating with thefirst mentioned contact, an arm connected to said lever and extending`between the same and the base, and a Weight on said arm.

5. In an alarm device, the combination of a bracket, an expansion memberad'acent to said bracket, a lever pivoted to sai bracket and extendingover said member and having a contact adjacent its free end, a contactcooperating With the first mentioned contact, an arm connected 4to saidlever and extending beneath the same, and a weight on said arm.

In testimony whereof, I hereunto aiiix my signature in the presence oftwo Witnesses.

FLYD L. SCOUTTEN.

Witnesses:

BRENNAN B. Wns'r, HUGH B. MCGILL.

Uopies of this patent may be obtained for ilve cents each, by addressingthe Commissioner ot Patents, Washington, D. U.

